(function () {
  var SEARCH_HISTORY_KEY = "searchHistory";
  var SEARCH_HISTORY_LIMIT = 10;

  function readSearchHistory() {
    try {
      var stored = window.localStorage.getItem(SEARCH_HISTORY_KEY);
      var parsed = stored ? JSON.parse(stored) : [];
      if (!Array.isArray(parsed)) return [];
      return parsed
        .filter(function (item) {
          return typeof item === "string" && item.trim() !== "";
        })
        .map(function (item) {
          return item.trim();
        })
        .slice(0, SEARCH_HISTORY_LIMIT);
    } catch (_) {
      return [];
    }
  }

  function saveSearchHistory(keyword) {
    keyword = String(keyword || "").trim();
    if (!keyword) return readSearchHistory();

    var compareKeyword = keyword.toLocaleLowerCase();
    var history = readSearchHistory().filter(function (item) {
      return item.toLocaleLowerCase() !== compareKeyword;
    });
    history.unshift(keyword);
    history = history.slice(0, SEARCH_HISTORY_LIMIT);

    try {
      window.localStorage.setItem(SEARCH_HISTORY_KEY, JSON.stringify(history));
    } catch (_) {
      // 隐私模式或存储空间不可用时不阻断搜索跳转。
    }
    return history;
  }

  window.SearchHistory = {
    key: SEARCH_HISTORY_KEY,
    limit: SEARCH_HISTORY_LIMIT,
    get: readSearchHistory,
    add: saveSearchHistory,
    clear: function () {
      try {
        window.localStorage.removeItem(SEARCH_HISTORY_KEY);
      } catch (_) {
        // localStorage 不可用时保持静默。
      }
    },
  };

  if (!document.querySelector('meta[name="viewport"]')) {
    var viewport = document.createElement("meta");
    viewport.name = "viewport";
    viewport.content = "width=device-width, initial-scale=1.0";
    document.head.appendChild(viewport);
  }

  var mobileMenu = document.getElementById("homeMobileMenu");
  var mobileMenuButton = document.querySelector(".header-menu-button");
  var mobileMenuCloseButtons = mobileMenu
    ? mobileMenu.querySelectorAll("[data-home-menu-close]")
    : [];

  function setMobileMenu(open) {
    if (!mobileMenu || !mobileMenuButton) return;
    mobileMenu.hidden = !open;
    mobileMenuButton.setAttribute("aria-expanded", open ? "true" : "false");
    document.body.classList.toggle("home-mobile-menu-open", open);
    if (open) {
      var closeButton = mobileMenu.querySelector(".home-mobile-menu-close");
      if (closeButton) closeButton.focus({ preventScroll: true });
    } else {
      mobileMenuButton.focus({ preventScroll: true });
    }
  }

  if (mobileMenu && mobileMenuButton) {
    mobileMenuButton.addEventListener("click", function () {
      setMobileMenu(true);
    });
    Array.prototype.forEach.call(mobileMenuCloseButtons, function (button) {
      button.addEventListener("click", function () {
        setMobileMenu(false);
      });
    });
    document.addEventListener("keydown", function (event) {
      if (event.key === "Escape" && !mobileMenu.hidden) setMobileMenu(false);
    });
  }

  function refreshDecrypt(root) {
    if (typeof window.initLazyImages === "function") {
      window.initLazyImages(root || document);
    }
  }


  document.addEventListener(
    "click",
    function (event) {
      var el = event.target;
      if (el && el.nodeType === 3) {
        el = el.parentElement;
      }
      if (!el || !el.closest) return;
      var tag = el.closest(".poster-card-tag[data-tag-href], .ranking-card-tag[data-tag-href]");
      if (!tag) return;
      var href = tag.getAttribute("data-tag-href");
      if (!href) return;
      event.preventDefault();
      event.stopPropagation();
      if (event.stopImmediatePropagation) event.stopImmediatePropagation();
      window.location.href = href;
    },
    true
  );

  function initDesktopSearchPopover() {
    var form = document.querySelector('form.header-search[action="/search/"]');
    var input = form && form.querySelector('input[name="q"]');
    var popover = document.querySelector("[data-header-search-popover]");
    if (!form || !input || !popover) return;

    var desktopMedia = window.matchMedia("(min-width: 768px)");
    var historyList = popover.querySelector("[data-search-history-list]");
    var hotList = popover.querySelector("[data-search-hot-list]");
    var guessList = popover.querySelector("[data-search-guess-list]");
    var historySection = popover.querySelector(".header-search-history");
    var hotSection = popover.querySelector(".header-search-hot");
    var guessSection = popover.querySelector(".header-search-guess");
    var dividers = popover.querySelectorAll(".header-search-popover-divider");
    var clearButton = popover.querySelector("[data-search-history-clear]");
    var closeButton = popover.querySelector("[data-header-search-close]");
    var changeButton = popover.querySelector("[data-search-guess-change]");
    var hotLikeData = null;
    var hotLikeRequest = null;
    var guessOffset = 0;
    var searchActive = false;

    function syncPopoverVisibility() {
      var hasHistory = historySection && !historySection.hidden;
      var hasHot = hotSection && !hotSection.hidden;
      var hasGuess = guessSection && !guessSection.hidden;
      var hasContent = hasHistory || hasHot || hasGuess;

      if (dividers[0]) dividers[0].hidden = !(hasHistory && (hasHot || hasGuess));
      if (dividers[1]) dividers[1].hidden = !(hasHot && hasGuess);

      popover.hidden = !(searchActive && hasContent);
      form.classList.toggle("is-search-open", searchActive && hasContent);
      input.setAttribute("aria-expanded", searchActive && hasContent ? "true" : "false");
      if (!popover.hidden) positionPopover();
    }

    function searchKeyword(keyword) {
      keyword = String(keyword || "").trim();
      if (!keyword) return;
      saveSearchHistory(keyword);
      window.location.href = "/search/" + encodeURIComponent(keyword) + "/";
    }

    function renderHistory() {
      if (!historyList) return;
      historyList.textContent = "";
      var history = readSearchHistory();
      if (historySection) historySection.hidden = history.length === 0;
      history.forEach(function (keyword) {
        var button = document.createElement("button");
        button.type = "button";
        button.className = "header-search-history-tag";
        button.textContent = keyword;
        button.addEventListener("click", function () {
          searchKeyword(keyword);
        });
        historyList.appendChild(button);
      });
      syncPopoverVisibility();
    }

    function normalizeHotItems(data) {
      var hot = data && Array.isArray(data.hotSearch) ? data.hotSearch : [];
      return hot
        .map(function (item) {
          return { keyword: String((item && item.keyword) || "").trim() };
        })
        .filter(function (item) {
          return item.keyword !== "";
        })
        .slice(0, 6);
    }

    function renderHotSearch() {
      if (!hotList) return;
      hotList.textContent = "";
      var items = normalizeHotItems(hotLikeData);
      if (hotSection) hotSection.hidden = items.length === 0;
      items.forEach(function (item, index) {
        var button = document.createElement("button");
        var rank = document.createElement("span");
        var keyword = document.createElement("span");
        button.type = "button";
        button.className = "header-search-hot-item";
        rank.className = "header-search-hot-rank";
        keyword.className = "header-search-hot-keyword";
        rank.textContent = String(index + 1);
        keyword.textContent = item.keyword;
        button.appendChild(rank);
        button.appendChild(keyword);
        button.addEventListener("click", function () {
          searchKeyword(item.keyword);
        });
        hotList.appendChild(button);
      });
      syncPopoverVisibility();
    }

    function detailHref(item) {
      var slug = String((item && item.slug) || "").trim();
      var id = Number(item && item.id);
      var key = slug || (id > 0 ? String(id) : "");
      return key ? "/detail/" + encodeURIComponent(key) + "/" : "#";
    }

    function firstCardTag(item) {
      var tags = item && Array.isArray(item.tagNames) ? item.tagNames : [];
      var themes = item && Array.isArray(item.themeNames) ? item.themeNames : [];
      return String(tags[0] || themes[0] || "热门").trim();
    }

    function setCardCover(img, rawURL, title) {
      var cover = String(rawURL || "").trim();
      var imageTitle = String(title || "精彩短剧").trim();
      img.alt = imageTitle;
      img.title = imageTitle;
      img.addEventListener("error", function () {
        img.classList.remove("lazy");
        img.removeAttribute("data-src");
        img.src = PLACEHOLDER;
      }, { once: true });
      if (cover && typeof window.shouldDecryptImage === "function" && window.shouldDecryptImage(cover)) {
        img.className = "lazy";
        img.src = PLACEHOLDER;
        img.setAttribute("data-src", cover);
        return;
      }
      img.src = cover || PLACEHOLDER;
    }

    function createGuessCard(item) {
      var card = document.createElement("a");
      var cover = document.createElement("div");
      var image = document.createElement("img");
      var episode = document.createElement("span");
      var copy = document.createElement("div");
      var title = document.createElement("div");
      var desc = document.createElement("div");
      var tagRow = document.createElement("div");
      var tag = document.createElement("span");
      var totalEpisode = Math.max(0, Number(item && item.totalEpisode) || 0);

      card.className = "header-search-guess-card";
      card.href = detailHref(item);
      card.setAttribute("aria-label", String((item && item.title) || "查看短剧"));
      cover.className = "header-search-guess-cover";
      episode.className = "header-search-guess-episode";
      copy.className = "header-search-guess-copy";
      title.className = "header-search-guess-title";
      desc.className = "header-search-guess-desc";
      tagRow.className = "header-search-guess-tag-row";
      tag.className = "header-search-guess-tag";

      setCardCover(image, item && item.cover, item && item.title);
      episode.textContent = totalEpisode ? totalEpisode + "集" : "更新中";
      title.textContent = String((item && item.title) || "精彩短剧");
      desc.textContent = String((item && item.desc) || "精彩内容等你来看");
      tag.textContent = firstCardTag(item);

      cover.appendChild(image);
      cover.appendChild(episode);
      tagRow.appendChild(tag);
      copy.appendChild(title);
      copy.appendChild(desc);
      copy.appendChild(tagRow);
      card.appendChild(cover);
      card.appendChild(copy);
      return card;
    }

    function currentGuessBatch(items) {
      if (items.length <= 4) return items.slice(0, 4);
      var batch = [];
      for (var index = 0; index < 4; index += 1) {
        batch.push(items[(guessOffset + index) % items.length]);
      }
      return batch;
    }

    function renderGuessLike() {
      if (!guessList) return;
      guessList.textContent = "";
      var items = hotLikeData && Array.isArray(hotLikeData.guessLike)
        ? hotLikeData.guessLike.filter(function (item) { return item && (item.id || item.slug); })
        : [];
      if (guessSection) guessSection.hidden = items.length === 0;
      currentGuessBatch(items).forEach(function (item) {
        guessList.appendChild(createGuessCard(item));
      });
      if (items.length) refreshDecrypt(guessList);
      syncPopoverVisibility();
    }

    function renderHotLike() {
      renderHotSearch();
      renderGuessLike();
    }

    function loadHotLike() {
      if (hotLikeData) {
        renderHotLike();
        return Promise.resolve(hotLikeData);
      }
      if (hotLikeRequest) return hotLikeRequest;
      if (hotSection) hotSection.hidden = true;
      if (guessSection) guessSection.hidden = true;
      syncPopoverVisibility();
      if (!window.HttpRequest || typeof window.HttpRequest.get !== "function") {
        hotLikeData = {};
        renderHotLike();
        return Promise.resolve(hotLikeData);
      }
      hotLikeRequest = window.HttpRequest.get("/api/playlet/hot-like")
        .then(function (response) {
          hotLikeData = response && response.data ? response.data : {};
          renderHotLike();
          return hotLikeData;
        })
        .catch(function () {
          hotLikeData = {};
          renderHotLike();
          return hotLikeData;
        });
      return hotLikeRequest;
    }

    function positionPopover() {
      if (popover.hidden || !desktopMedia.matches) return;
      var rect = form.getBoundingClientRect();
      var header = form.closest(".site-header");
      var headerRect = header ? header.getBoundingClientRect() : rect;
      var viewportPadding = 24;
      var width = popover.offsetWidth;
      var left = rect.right - width;
      var top = Math.max(rect.bottom + 12, headerRect.bottom + 12);
      left = Math.max(viewportPadding, Math.min(left, window.innerWidth - width - viewportPadding));
      popover.style.left = Math.round(left) + "px";
      popover.style.top = Math.round(top) + "px";
      popover.style.maxHeight = Math.max(240, window.innerHeight - top - 16) + "px";
    }

    function setPopover(open, options) {
      options = options || {};
      searchActive = Boolean(open && desktopMedia.matches);
      if (searchActive) {
        renderHistory();
        if (hotLikeData) renderHotLike();
        else loadHotLike();
      } else if (options.blur) {
        input.blur();
      }
      syncPopoverVisibility();
    }

    input.addEventListener("focus", function () {
      setPopover(true);
    });
    input.addEventListener("click", function () {
      setPopover(true);
    });
    clearButton.addEventListener("click", function () {
      window.SearchHistory.clear();
      renderHistory();
      input.focus({ preventScroll: true });
    });
    closeButton.addEventListener("click", function () {
      setPopover(false, { blur: true });
    });
    changeButton.addEventListener("click", function () {
      var items = hotLikeData && Array.isArray(hotLikeData.guessLike) ? hotLikeData.guessLike : [];
      if (items.length > 4) guessOffset = (guessOffset + 4) % items.length;
      renderGuessLike();
    });
    document.addEventListener("pointerdown", function (event) {
      if (!searchActive || form.contains(event.target) || popover.contains(event.target)) return;
      setPopover(false);
    });
    document.addEventListener("keydown", function (event) {
      if (event.key === "Escape" && searchActive) {
        setPopover(false, { blur: true });
      }
    });
    window.addEventListener("resize", function () {
      if (!desktopMedia.matches) {
        setPopover(false);
        return;
      }
      positionPopover();
    });
    window.addEventListener("scroll", positionPopover, { passive: true });
    if (typeof desktopMedia.addEventListener === "function") {
      desktopMedia.addEventListener("change", function (event) {
        if (!event.matches) setPopover(false);
      });
    }
  }

  initDesktopSearchPopover();

  document.addEventListener("submit", function (event) {
    var form = event.target;
    if (!form || !form.matches || !form.matches('form[action="/search/"]')) return;
    var input = form.querySelector('input[name="q"]');
    var keyword = String((input && input.value) || "").trim();
    if (!keyword) return;
    saveSearchHistory(keyword);
    event.preventDefault();
    window.location.href = "/search/" + encodeURIComponent(keyword) + "/";
  });

  if (document.body && document.body.classList.contains("search-layout")) {
    var currentSearchInput = document.querySelector('.header-search input[name="q"]');
    saveSearchHistory(currentSearchInput && currentSearchInput.value);
  }
})();